diff --git a/lib/ace/autocomplete.js b/lib/ace/autocomplete.js
index b4bac72b..5af6afe4 100644
--- a/lib/ace/autocomplete.js
+++ b/lib/ace/autocomplete.js
@@ -344,7 +344,7 @@ var Autocomplete = function() {
             doc = selected;
         
         if (typeof doc == "string")
-            doc = {tooltipText: doc}
+            doc = {docText: doc}
         if (!doc || !(doc.docHTML || doc.docText))
             return this.hideDocTooltip();
         this.showDocTooltip(doc);